hibernate 1对1基于外键

基于外键映射：对于1-1外键关联，其外键可以存放在任意的一边，在需要存放外键的一端，增加many-to-one元素，为many-to-one增加unique="true"属性：另一端使用one-to-one元素，该元素使用property-ref属性指定使用关联实体主键以外的字段

<?xml version="1.0" ?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

<!-- Generated 2016-7-13 17:07:06 by Hibernate Tools 3.4.0.CR1 -->

<hibernate-mapping>

    <class name="com.lidongyang.hibernate.Department" table="DEPARTMENT" >

        <id name="id" type="java.lang.Integer">

            <column name="ID" />

            <generator class="native" />

        </id>

        <property name="name" type="java.lang.String">

            <column name="NAME" />

        </property>

        <many-to-one name="manager" class="com.lidongyang.hibernate.Manager" column="MANAGER_ID" unique="true" ></many-to-one>

    </class >

</hibernate-mapping>

<?xml version="1.0" ?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

<!-- Generated 2016-7-13 17:07:06 by Hibernate Tools 3.4.0.CR1 -->

<hibernate-mapping>

    <class name="com.lidongyang.hibernate.Manager" table ="MANAGER">

        <id name="id" type="java.lang.Integer">

            <column name="ID" />

            <generator class="native" />

        </id>

        <property name="name" type="java.lang.String">

            <column name="NAME" />

        </property>

        <one-to-one name="department" class="com.lidongyang.hibernate.Department" property-ref="manager" ></one-to-one>

    </class >

</hibernate-mapping>